def is_prime(n):
    if n < 2:
        return False
    for i in range(2, int(n ** 0.5) + 1):
        if n % i == 0:
            return False
        return True


print(is_prime(30))


def factorial(n):
    if n == 1:
        return 1
    else:
        return n * factorial(n - 1)
